Excavating and load handling machine



Sept.l5, 1942. R; H. ZEILMAN EXCAVATING AND LOAD HANDLING MACHINE Filed Sept. 8, 1941 2 Sheets-Sheet l Sept. 15, 1942. RJH. ZEILMAN EXCAVATING AND LOAD HANDLING MACHINE Filed Sept. 8, 1941 2 Sheets-Sheet 2 w .mg

' G) w INVENTOR.

BY m5 prrrmnsy Patented Sept. 15, 1942 EXCAVATING AND LOAD HANDLING MACHINE Roy H. Zeiiman, Lorain, Ohio, assignor to Thew Shovel Company, Lorain, Ohio, a corporation of Ohio Application September a, 1941, Serial No. 409,915

10 Claims.

My invention relates to excavating and load handling machines of the vehicular type comprising a base and a rotatable superstructure mounted thereon, and relates more particularly to improvements in the design and arrangement of the base and the mounting thereon of the superstructure.

An object of the invention is to provide, for power operated load handling and excavating machines oi the type described, an improved construction whereby the weight of the superstructure may be utilized in an improved manner for counterbalancing purposes.

Another object of my invention is to provide, for power operated load handling and excavating machines of the type described, an improved positioning of the operator's cab.

Another object of my invention is to provide,

for power operated load handling and excavating machines of the type referred to, an improved mounting therefor whereby either a crane boom or shovel boom may interchangeably be accommodated and their respective weights adjusted and properly counterbalanced.

Another object of my invention is to provide such improved mounting for the superstructure of load handling and excavating machines of the type referred to as to afford a better balance and better steering action when said machine is travel- A further object of my invention is to provide such improved mounting for the superstructure adapted to be associated with a load handling and excavating machine of my invention as to afford the most efllcient position when travelling or working of the superstructure associated therewith.

Other objects of my invention and the invenof the cab, the engine and motor housing and associated parts;

Fig. 2 is a section taken from the line 2-2 of Fig.1;

Fig. 3 is aperspective view of a complete truck showing a" crane associated therewith;

Fig. 4 is a perspective view of the complete truck of my invention showing a power shovel associated therewith; I

crane of my invention showing it in operative use in contrast to Fig. 3 wherein the crane is shown in travelling position; and

Fig. 6 is a side elevational view of the truck of my invention showing a power shovel associated therewith, said power shovel being in a position of use. as contrasted with Fig. 4 showing the power shovel in its travelling position.

Heretoiore the booms of cranes and power shovels and the like, when in working or travelling position, have had to project upwardly at a considerable angle so as to clear the driver's cab. The overall height has thus been necessarily much greater than was desirable, limiting the clearance with which the vehicle could pass beneath an overhead structure and impairing the equilibrium by placing the center of gravity of the vehicle as a whole too high above the ground. In the machine of the present invention, this condition has been improved.

In Figs. 1, 3 and 4, the cab of the truck is shown disposed forwardly and at the left hand side thereof, the motor being centrally disposed and a relatively wide portion to the right of the truck being reserved as a platform to accommodate a crew and for convenience in servicing the motor. The cab, therefore, is positioned well to one side of the center line of the truck and the boom 20 of a crane or the like or the boom 30 and dipper stick iii of a power shovel may be conveniently lowered beside it to reduce the overall height and the elevation of the center of gravity. Figs. 3 and 4 illustrate the travelling positions of a crane and a power shovel respectively.

In Fig. 1. the cab is" designated at I, the motor at 2, and the platform at 3 and a wall or railing for the platform at 3'. Rearwardly of the cab, motor and platform portion of the truck, which is the forward or leading portion thereof, the truck is provided with a chassis frame 4 and a pair of tandem driving wheels 4'. A turntable 6 is adapted to be mounted upon the chassis and the particular superstructure desired is mounted upon the turntable.

A special mounting plate 5, secured to the chassis l, is employed for the turntable 6, to which I have previously referred, and such special mounting 5 consists in a generally rectangularly shaped metal plate I having convex end portions 8--9. The turntable 6 is adapted to be bolted to the plate 7| in either of two, positions and the plate, therefore, is provided with two sets of bolt apertures. As illustrated in Fig. 1, each set may consist of four groups, those for the forward position Fig. 5 is an enlarged side elevational view of the 55 of the turntable being designated by z and those trated in Fig. 6 of the drawings. In this p'osition, the bolts l3 are placed in the rearmost apertures y and, when so mounted, the turntable kingpin I is disposed within a clearance opening H provided in the turntable mounting plate When the turntable 6 is mounted upon the mounting plate I in its foremost position, as shown in Fig. 5, the bolts l3, which were placed in the apertures 11 in the rearmost position, are

moved forwardly and engage the apertures a: and the kingpin is then disposed within a suitable clearance opening l2 of themounting plate.

The superstructure M, in accordance with the usual practice, is mounted by means of tapered rollers l5 upon a trackway l6 of the turntable 6 which, in turn, is secured by means of the bolts l3 to the turntable mounting plate I and the kingpin l0 rotatably secures said superstructure M and said turntable 6 together.

In adapting the excavating and load handling machine of my invention, with optional placement of a crane or shovel boom, both for travelling and operating positions, it will be noted that since the crane boom is lighter than the combined shovel boom, dipper stick and shovel,

' l the forward mounting for the crane is preferred,

particularly when in travelling, in order to secure sufficient weight on the front wheels to obtain good steering action.

The turntable is however mounted rearwardlyadaptable to any load handling or excavating machine rotatable upon a base, such as a clam shell back digger as well as a crane or a shovel and that numerous and extensive departures may be made from the embodiment herein illus-' trated and described without, however, departing from the spirit of my invention and the scope of the appended claims.

I claim:

1. A mounting plate for excavating and load handling machines of the type comprising a turntable and a superstructure mounted thereon, said turntable mounting comprising a generally rectangular metal plate having convex end portions, said plate being provided with two sets of bolt apertures and clearance openings, the turntable being provided with an aligned setof apertures, said turntable apertures being placed in registry with either set of apertures and the turntable'kingpin being adapted to be disposed within an associated clearance opening.

2. In an excavating and load handling machine, a superstructure mounted upon a turntable, a support for said turntable, said support prising a plurality of apertures and clearance openings whereby a superstructure adapted to be rotatably mounted upon said turntable and said turntable is adapted to be positioned forwardly or rearwardly with respect to said frame.

3. Inan excavating and load handling machine, a superstructure mounted upon a tumtable, a support for said turntable comprising mounting means disposed forwardly and rearwardly of said mounting plate whereby various types of superstructures may be associated therewith, said superstructure and turntable being locked into optional position with said mounting plate either forwardly or rearwardly thereof.

4. An excavating and load handling machine comprising a truck frame, a turntable adjustably mounted thereon, a superstructure mounted upon said turntable, said superstructure and turntable being adapted to have longitudinally movable mounting with respect to said truck frame.

5. In an excavating and load handling ma- I chine, a truck chassis having mounted thereon comprising a rectangular frame, a mounting a turntable upon which a superstructure is erected, a mounting for said turntable comprising a plate having a plurality of perforations disposed therein, means adapted to be projected through said perforations and to rigidly secure said turntable to said mounting plate, said latter means being adapted to be optionally positioned within certain of said perforations to secure different relative positions of said turntable and the superstructure erected thereon with respect to the truck chassis.

6. In an excavating and load handling machine, a truck chassis having mounted thereon -a turntable upon which a superstructure is erected, a mounting for said turntable comprising a plate having a plurality of perforations disposed therein, said perforations being longitudinally disposed therein, securing means adapted to be associated with said turntable and to be optionally positioned within certain of said longitudinally disposed perforations whereby said turntable may be secured to said mounting plate in a desired position with respect to the truck chassis 7. A mounting plate for excavating and load handling machines of the type comprising a turntable and a superstructure mounted thereon, said turntable mounting comprising a generally rectangular metal plate having convex end portions, said plate being provided with two sets of bolt apertures and clearance openings, the turntable being provided with an aligned set of apertures, said turntable apertures being placed in registry with either set of aperturesprovided in said turntable mounting plate, bolts adapted to be projected through said aligned apertures securing said turntable and said mounting plate together and a turntable kingpin adapted to be disposed within an associated clearance opening.

8. A mounting plate for excavating and load handling machines of the type comprising a turntable and a superstructure mounted thereon, said turntable mounting comprising a generally elongated rectangular metal plate, said plate being provided with two longitudinally extending sets of bolt apertures and clearance openings, the turntable being provided with a set of apertures adapted to be placed in registry with either set of plate apertures, means to secure said turntable and plate together, said means being projected through a selected set of aligned apertures and the turntable kingpin adapted for 10.In an excavating .and load handling ma'- v chine of the type comprising a superstructure mounted thereon, a support for .said superstructure, said support comprising a plurality of sets of superstructure connecting means, the means of each set being longitudinally displaced relative to the means of the other sets," each of said sets being adapted to securely connect the superstructure to the support whereby the superstruc-- ture is adapted to have longitudinally adjusted position with respect to said support.

ROY H. ZEI'LMAN. 

